12V LED circuit diagram Switching Constant Current Driver circuit diagram

Download source: 180KHz 60V 4A Switching Current Boost LED Constant Current Driver

 http://www.xlsemi.com/datasheet/XL6005%20datasheet.pdf

Switching LED Constant Current Driver circuit diagram XL6005 regulator is fixed frequency PWM Boost (step-up) LED constant current driver, capable of driving Series 1W/3W/5W LED units with excellent line and load regulation. The regulator is simple to use because it includes internal frequency compensation and a fixed-frequency oscillator so that it requires a minimum number of external components to work. The XL6005 could directly drive 11 Series 1W LED units at VIN>12V .

Applications:  LED Lighting, Boost constant current driver, Monitor LED Backlighting 7’ to 15’ LCD Panels

Wide 3.6V to 32V Input Voltage Range, 0.22V FB adjustable LED drive current, Directly drive 11 Series 1W LED at VIN>=12V, Fixed 180KHz Switching Frequency  Max. 4A Switching Current Capability, Up to 94% efficiency, Excellent line and load regulation, EN PIN TTL shutdown capability & With PWM Dimming Function.

LED driver circuit diagram VIN=12V to driver 11 x 1W series LED units

All leds must be used with current limiting resistor

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The parallel connection of LED modules in a 12 V system requires some means of current stabilizationto keep the current constant, which in turn is associated with an energy loss of at least 17.5%

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